Symfony 5.0 (#6)

* Remove support for Symfony v2.3.
* Add support for Symfony v4 & v5.
* Add support for Sensio FrameworkExtraBundle v5.
* Start using Symfony phpunit-bridge for testing.

Author: mattjanssen

.gitignore

@@ -1,3 +1,5 @@
 /build/
 /vendor/
-
+/composer.phar
+/composer.lock
+/phpunit.xml

.travis.yml

@@ -1,14 +1,39 @@
+language: php
+
 sudo: false
 
-language: php
+cache:
+  directories:
+    - $HOME/.composer/cache/files
+    - .phpunit
+
 php:
-  - 5.5
   - 5.6
   - 7.0
+  - 7.1
+  - 7.2
+  - 7.3
+
+matrix:
+  include:
+    - php: 7.0
+      env: deps=low
+  fast_finish: true
+
+env:
+  global:
+    - deps=no
+
+before_install:
+  - export SYMFONY_PHPUNIT_REMOVE_RETURN_TYPEHINT=1
+  - export SYMFONY_PHPUNIT_DIR="$(pwd)/.phpunit"
+  - INI_FILE=~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini
+  - echo memory_limit = -1 >> $INI_FILE
+  - phpenv config-rm xdebug.ini
 
-before_script:
-  - composer install --no-interaction -o
+install:
+  - if [ "$deps" = "no" ]; then composer install; fi;
+  - if [ "$deps" = "low" ]; then composer --prefer-lowest --prefer-stable update; fi;
 
 script:
-  - mkdir -p build/logs
-  - vendor/bin/phpunit
+  - ./vendor/bin/simple-phpunit

composer.json

@@ -13,13 +13,14 @@
     ],
     "require": {
         "php": "^5.4|^7",
-        "symfony/symfony": "^2.3|^3",
-        "sensio/framework-extra-bundle": "^3|^4"
+        "symfony/symfony": "^2.4|^3|^4|^5",
+        "sensio/framework-extra-bundle": "^3|^4|^5"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.0",
-        "mockery/mockery": "^0.9.5",
-        "jms/serializer-bundle": "^1"
+        "symfony/phpunit-bridge": "^3.4.19|^4.1.8|^5",
+        "mockery/mockery": "^0.9.5|^1",
+        "phpoption/phpoption": "^1.1",
+        "jms/serializer-bundle": "^1|^2|^3"
     },
     "suggest": {
         "jms/serializer-bundle": "For serializing with the JMS Serializer"